/* roulang page: index */
:root {
      --bg-gradient: linear-gradient(135deg, #060a13 0%, #0b1329 100%);
      --card-bg: rgba(15, 23, 42, 0.72);
      --card-border: rgba(56, 189, 248, 0.16);
      --card-hover-border: rgba(56, 189, 248, 0.45);
      --primary-glow: rgba(0, 242, 254, 0.4);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }

    body {
      background: #060a13;
      background-image: radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.12) 0px, transparent 50%),
                        radial-gradient(at 100% 100%, rgba(2, 132, 199, 0.1) 0px, transparent 50%);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--card-border);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: var(--card-hover-border);
      box-shadow: 0 10px 25px -5px rgba(56, 189, 248, 0.18), 0 0 15px rgba(56, 189, 248, 0.12);
      transform: translateY(-4px);
    }

    /* 发光主按钮 */
    .btn-glow-primary {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
      color: #031126;
      font-weight: 600;
      box-shadow: 0 0 16px var(--primary-glow);
      transition: all 0.25s ease;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 26px rgba(0, 242, 254, 0.65);
      transform: translateY(-1px);
    }
    .btn-glow-primary:active {
      transform: scale(0.98);
    }

    /* 发光次级按钮 */
    .btn-glow-secondary {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(56, 189, 248, 0.35);
      color: #e2e8f0;
      transition: all 0.25s ease;
    }
    .btn-glow-secondary:hover {
      border-color: #38bdf8;
      box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
      color: #38bdf8;
    }

    /* 状态指示脉冲动画 */
    @keyframes pulse-green {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }
    .status-pulse {
      animation: pulse-green 2s infinite ease-in-out;
    }

    /* 科技网格背景修饰 */
    .bg-grid-pattern {
      background-size: 36px 36px;
      background-image: linear-gradient(to right, rgba(56, 189, 248, 0.04) 1px, transparent 1px),
                        linear-gradient(to bottom, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
    }

    /* 折叠手风琴样式 */
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }

/* roulang page: category1 */
:root {
      --bg-gradient: linear-gradient(135deg, #060a13 0%, #0b1329 100%);
      --card-bg: rgba(15, 23, 42, 0.72);
      --card-border: rgba(56, 189, 248, 0.16);
      --card-hover-border: rgba(56, 189, 248, 0.45);
      --primary-glow: rgba(0, 242, 254, 0.4);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    body {
      background: #060a13;
      background-image: radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.12) 0px, transparent 50%),
                        radial-gradient(at 100% 100%, rgba(2, 132, 199, 0.1) 0px, transparent 50%);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--card-border);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: var(--card-hover-border);
      box-shadow: 0 10px 25px -5px rgba(56, 189, 248, 0.18), 0 0 15px rgba(56, 189, 248, 0.12);
      transform: translateY(-4px);
    }
    .btn-glow-primary {
      background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
      color: #031126;
      font-weight: 600;
      box-shadow: 0 0 16px var(--primary-glow);
      transition: all 0.25s ease;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 26px rgba(0, 242, 254, 0.65);
      transform: translateY(-1px);
    }
    .btn-glow-primary:active {
      transform: scale(0.98);
    }
    .btn-glow-secondary {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(56, 189, 248, 0.35);
      color: #e2e8f0;
      transition: all 0.25s ease;
    }
    .btn-glow-secondary:hover {
      border-color: #38bdf8;
      box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
      color: #38bdf8;
    }
    .bg-grid-pattern {
      background-size: 36px 36px;
      background-image: linear-gradient(to right, rgba(56, 189, 248, 0.04) 1px, transparent 1px),
                        linear-gradient(to bottom, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
    }
    .status-pulse {
      animation: pulse-glow 2s infinite ease-in-out;
    }
    @keyframes pulse-glow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }